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1. WO2012104433 - CIRCULAR POLARIZATION ANTENNA SYSTEM AND RADIOFREQUENCY TAG READER COMPRISING SUCH A SYSTEM

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Publication Number WO/2012/104433
Publication Date 09.08.2012
International Application No. PCT/EP2012/051905
International Filing Date 03.02.2012
IPC
H01Q 9/04 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
9Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
04Resonant antennas
H01Q 1/22 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
12Supports; Mounting means
22by structural association with other equipment or articles
H01Q 21/24 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
21Antenna arrays or systems
24Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
CPC
H01Q 1/2225
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
12Supports; Mounting means
22by structural association with other equipment or articles
2208associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
2225used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
H01Q 21/24
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
21Antenna arrays or systems
24Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
H01Q 9/0421
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
9Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
04Resonant antennas
0407Substantially flat resonant element parallel to ground plane, e.g. patch antenna
0421with a shorting wall or a shorting pin at one end of the element
H01Q 9/0428
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
9Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
04Resonant antennas
0407Substantially flat resonant element parallel to ground plane, e.g. patch antenna
0428radiating a circular polarised wave
Applicants
  • CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S) [FR]/[FR] (AllExceptUS)
  • PLFAUM, Sylvain [FR]/[FR] (UsOnly)
  • KOSSIAVAS, Georges [FR]/[FR] (UsOnly)
  • STARAJ, Robert [FR]/[FR] (UsOnly)
Inventors
  • PLFAUM, Sylvain
  • KOSSIAVAS, Georges
  • STARAJ, Robert
Agents
  • BLOT, Philippe
Priority Data
115085903.02.2011FR
Publication Language French (fr)
Filing Language French (FR)
Designated States
Title
(EN) CIRCULAR POLARIZATION ANTENNA SYSTEM AND RADIOFREQUENCY TAG READER COMPRISING SUCH A SYSTEM
(FR) SYSTÈME D'ANTENNE À POLARISATION CIRCULAIRE ET LECTEUR D'ÉTIQUETTE RADIOFRÉQUENCE COMPORTANT UN TEL SYSTÈME
front page image
Abstract
(EN) This circular polarization antenna system, of the type comprising emitting elements (11, 16, 17), placed on means forming a ground plane (12), is characterized in that the emitting elements comprise short-circuited quarter-wave antennae.
(FR) Ce système d'antenne en polarisation circulaire, du type comportant des éléments rayonnants (11, 16, 17), disposés sur des moyens formant plan de masse (12), est caractérisé en ce que les éléments rayonnants comportent des antennes quart-d'ondes court-circuitées.
Related patent documents
FR2971370
Latest bibliographic data on file with the International Bureau
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